Good day,
I'm trying to determine if anything changed between versions 1.3.0 and 1.3.7 in regards to payment modules

I have an add on that I'm working on that is touted as to work in 1.3.0; i keep getting errors on the 1.3.7 install . . . I really don't want to install a 1.3.0 version just to test to see if the module does indeed work . . .

From the errors I'm getting I'm thinking along the lines of the return path after the transaction is approved at the payment gateway . . .